DODGEbullets Posted April 14, 2020 Report Share Posted April 14, 2020 I'm getting a loud hum from the belt side. I needed a jump to start it. Common sense tells me it's the alternator. It's just cents aren't very common here and I have one shot to fix it. The noise sound more like a vacuum than a bearing. Almost hollow sounding like blowing across a bottle. It does go up and down in pitch with the throttle. Any suggestions?? Quote Link to comment Share on other sites More sharing options...
OhareFred Posted April 14, 2020 Report Share Posted April 14, 2020 Well, instead of guessing and throwing parts at it, first things I would do is eliminate the battery and alternator by having them properly tested. Could be anything from what you described. Tensioner, ac compressor, bad belt, broken vacuum hose, see what Imean? 2late4u, Armando G and Summer Solstice 3 Quote Link to comment Share on other sites More sharing options...
Summer Solstice Posted April 14, 2020 Report Share Posted April 14, 2020 (edited) ^^ What he said. Often times auto part stores can be found that will test these items for free. If so inclined, you can remove the belt and hand turn accessible individual pulleys, such as the alternator and tensioner, and judge for yourself if they feel improper. Edited April 14, 2020 by Summer Solstice Quote Link to comment Share on other sites More sharing options...
2late4u Posted April 14, 2020 Report Share Posted April 14, 2020 also make sure you have a good seal on the air cleaner box since it sounds like a vacuum that goes up and down with the speed also any of the tubing and connections Quote Link to comment Share on other sites More sharing options...
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